A method and apparatus for observing exhibit sites which provides the ability to overlay computer generated images and sound on a live exhibit to create and present these overlays on demand in varying levels of detail for use by the general public, in indoor and outdoor settings, without requiring instruction,...http://www.google.es/patents/US6175343?utm_source=gb-gplus-sharePatente US6175343 - Method and apparatus for operating the overlay of computer-generated effects onto a live image
Method and apparatus for operating the overlay of computer-generated effects ...
